Neutralizing bar



2 Shee'tsfsneet 1 ATI'ORNEY March 20, 1928.

A. J. ROSTAL NEUTRALIZING BAR Filed Aug. 28. 1924 n n KN w hm. 5W n. .w

NN NN NN s March 20, 1928.

Patented Mar. 20, 1928.

UNITED STATES 1,663,466 PATENT OFFICE.'

ALBERT J. BOSTAL, OF CHICAGO, ILLINOIS.

NEUTRALIZING BAR.

Application led August 28, 1924. Serial No. 734,771.

This invention relates to new and useful improvements in a neutralizingbar and more particularly to a device which is especially adapted forapplication to a printing press or other machine thru which paper ispassed for removing static electricity from the paper. The main objectof my invention is the provision of a neutralizing device of thischaracter which can be readily adjusted for `positioning the same withrespect to the paper whether or not running beneath the neutralizer orabove the same.

Another object of my invention is the provision of a neutralizer whichcan be quickly and readily placed in position upon a printing press orthe like or disconnected therefrom and the conducting elements which arecarried by the neutralizer are so positioned with respect to the same asto prevent them from becoming accidentally Abent out of shape or renderthem useless. f

A further object of the invention is the provision of a neutralizingdevice of the above character whereby the conducting elements are sopositioned with respect to the current supply that it will be necessaryto have a comparatively strong current supply in order to transfer thesame to the conductors and thus provide a comparatively strong currentfor the conductors whereby to positively remove all static electricityfrom the paper passing in contact with the conductors.

With the above and other objects in view, the invention consists in thenovel features of construction, the combination and arrangement of partshereinafter more full set forth, pointed out in the claims and s own inthe accompanying drawings, in which:

Fig. 1 is a side elevation illustratin my improved neutralizer inoperative position,

Fig. 2 is a longitudinally sectional view thru the main portion of the`neutralizer,

Fig. 3 is a side elevation illustrating the support for the conductorsand the conductors position therein,

Fig. 4 is a transverse section on the line 4 4 of Fig. 2 and,

Fig. 5 is a transverse section on the line 5-5 of Fig. 2.

In carr ing out my invention I provide two end earing cap members 1 and2 in which is rotatably mounted the supporting sleeve 3. Arrangedcentrally wit in this sleeve 3 is a conductive tube 4 which is connectedthru the medium of the rod 5 to any source of electric supply by meansof the conducting wire 6. rod 5 is threaded into an opening in the tube4 and retained in proper position by means of a lock nut 7 which iscarried by the rod 5 and bears against the cap bearing 2. From this itwill be apparent that a source of electric current may be readilysupplied to the conductive tube 4.

Mounted upon the tube 4 is a sleeve 8 of insulating material which isretained in position upon the tube by means of the nuts 9 threaded uponeach end of the tube. Mounted upon this insulating sleeve 8 are aplurality of conductors 10 which include a circular body portion 11mounted upon the sleeve 8 and provided with annular extensions 12 whichproject thru the slot 13 in the sleeve 3 a predetermined distance withtheir outer ends formed with teeth or projections 15. These conductors11 are equally spaced by means of a plurality of rings 16 which aremounted upon the insulating sleeve 8. Positioned upon the ends of sleeve8 are the end sleeves 17 which retain the conductors 11 against lateralmovement.

The outer insulating sleeve 3 is strengthcned by means of alongitudinally arcuateshaped plate 18 which is attached to the outersurface of the sleeve 3 by means of screw members 19 and projectinglaterally from the plate 18 is a rib 20 Which extends longitudinally ofthe plate 18 and preferably arranged along the central portion of theplate so as to not only provide for strengthening the bar but provide ahandle hold whereby the device may be readily rotated for positioningthe conductors in a depending position as shown in Fig. 1 or extendingupwardly from the top portion of the bar for engaging paper passing overthe bar.

The neutralizer is supported by having the cap members 1 and 2 mountedwithin the bearings 21 at each end of the device, said bearings beingadjustably supported upon a rod 22 which 1n turn is adjustably connectedto the bearings 23 clamped in any suitable position upon the printingpress or other machine to which the device is to be applied.

In order to gether with t e conductors, to be rotated within the bearingcaps 1 and 2, the sleeves 3 and 8 and one of the sleeves 17 are providedwith the slots 24 to permit the passage of the inner end of the rodduring the rotation of these members. This will permit The inner end ofthis permit the sleeves 3 and 8 tothe adjustment of the conductorseither to an upright position for contacting paper passing over thedevice or for positioning them in a depending position for contactingpaper travelling -beneath the device. From this 1t Will be apparent thatrefrardiess of the travel ci the paper wliellier above or beneath thedevice the paper will contact with the teeth 15 and as these conductors1l together With the teeth are highly energized it Will remove thestatic electricity from the paper. It will be noted that the extensionsl2 project thru a longitudinal slot Q5 in the sleeve 3. In using mydevice. member ii is connected by wire t3 to one side of a suitablesource of electrical energy. This induces a charge of static electricily on members l0 and teeth 15 thereof. Member' 4 is so connected to thesource of electrical energy that the static electricity induced onmembers 10 is opposite in value to the static electricity produced onthe paper during the printing process or by atmospheric conditions. Thecharges of static electricity on members l0 therefor neutralize thecharges of static electricity on the paper. eliminating all difficult-yin handling and feeding the paper through the press such as occurs Wherethe static electricity on the paper is not removed or neutralized.

While I have shown and described the preferred embodiment of myinvention, it will vbe understood that various changes and alterationsmay be made Without departing from the spirit of the invention or thescope of the appended claims.

Having thus described my invention, what I claim is:

l. A neutralizing device comprising space-d bearing caps, a conductiveelement having its ends centrally disposed Within said caps, aninsulating sleeve surrounding said conducting element, mea'ns forconnecting said conducting element with a source of electrical supply, aplurality of conductors mounted upon said insulating sleeve, means forretaining said conductors in spaced relation. an outer insulating sleeveenclosing the conductors, said outer sleeve having a longitudinal slot,lateral extensions on said conductors projecting thru said slot, areinforcing member extending longitudinally of the outer sleeve andattached thereto and means whereby to permit rotative movement of theinsulating sleeves and conductors upon the central conducting elementfor arranging the extensions of the conductors on the inner insulatingsleeve in upright or depending position.

2. In a neutralizing device of the character stated, a rotatably mountedsleeve, a .stationary main electrical conductor mounted within andspaced away from the sleeve, stationary means for connecting saidconductor to a source of electrical energy, and a plurality ofsupplemental electrical conductors extending about and adjacent the mainconductor, the supplemental conductors being electrically insulated fromsaid main conductor and projecting beyond said sleeve and being movabletherewith.

3. In a neutralizing device of the character described, end bearingcaps, a sleeve rotatably mounted in said caps, a main conductorstationarily mounted in the sleeve and spaced therefrom, a plurality ofsupplemental conductors mounted for turning movement about the mainconductor and electrically insulated therefrom, said supplementalconductors extending through and projecting beyond the sleeve formovement therewith, and stationary means for connecting the mainconductor to a source of supply of electrical energy, said sleeve havinga slot therein adapted to permit turning thereof.

4. In a neutralizin device of the character described, end caring caps,a sleeve rotatably mounted in said caps, a main con-- ductor stationarilmounted in the sleeve and spaced there rom, a plurality of supplementalconductors mounted for turning movement about the main conductor andelectrically insulated therefrom, said supplemental conductors extendingthrough and projecting beyond the sleeve for movement therewith,stationary means for connecting the main conductor to a source of supplyof electrical energy, and an arcuate plate extending longitudinally ofand secured to the sleeve, said plate being provided with alongitudinally extending and outwardly projecting reinforcing ribproviding means for turning the sleeve in the end bearing caps.

In testimony whereof I aliix my signature.

ALBERT J. ROSTAL.

